Incandescent gas-burner



No. 615,288. Patented Dec. 6, |898.

' C. E. LOTZ.

INCANDESCENT GAS BURNER.

(Application filed Feb. 15, 1898.)

(No Model.)

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UNITED STATES PATENT OFFICE.

CHRISTIAN EDW. LOTZ, OF WHEELING, WEST VIRGINIA.

INCANDESCENT GAS-BURNER.

SPECIFICATION forming part of Letters Patent No. 615,288, dated December6, 1898. Application filed February 15, 1898. Serial N0. 670,338. (Nomodel.)

To caldi/171,077?, it may concern:

Beit known that I, CHRISTIAN EDW. LoTz, a citizen of the United States,residing at Wheeling, in the county of Ohio and State of West Virginia,have invented a new and useful Incandescent Gas-Burner, of which thefollowing is a specification. A

My invention relates to gas-burners, and more especially to that classof gas-burners in which the mantle is heated to incandescence, known asincandescent gas-burners.

The object of my invention is to provide a burner of this class whichshall be simple in construction and at the same time will be moreeconomical than those in general use.

A special object of my invention is to provide in a lamp of this classmeans for increasing the incandescent surface without increasing theconsumption of gas.

Vith these objects in view my invention consists in a burner of thisclass provided with a suitable tip, from which the mixed air and gasescapes at the point of ignition, and an inner and outer mantle, theflame-chamber being` located between the two mantles and a centraldraft-passage being furnished inside of the inner mantle.

My invention further consists in the improved construction, arrangement,and combination of parts hereinafter fully described and afterwardspecifically pointed out in the appended claim.

In order to enable others skilled in the art to which my invention mostnearly appertains to make and use the same, I will now proceed todescribeits construction and operation, reference being had to theaccompanying drawings, forming part of this specification, in which-Figure l is a perspective View of a burner constructed in accordancewith my invention, the glass chimney being shown in dotted lines andbroken away at the top. Fig. 2 is a central vertical section through thesame. Fig. 3 is a detail perspective view of the outer mantle. Fig. 4 isa detail perspective view of the inner mantle. Fig. 5 is a detailsectional view on the line 5 5 of Fig. 2, looking downward. Fig. 6 is adetail perspective View of the mixing-chamber and burner-tip detached.Fig. 7 is a detail sectional View on the line 7 7 of Fig. 2, lookingdownward.

Like letters of reference mark the same parts wherever they occur in thevarious figures of the drawings.

Referring to the drawings by letters, A indicates the supply-pipe, whichis threaded at its upper end, as at A, by means of which it is threadedinto a block B', forming the bottom of the mixing-chamber B. rllhismixingchamber is provided with side openings C for the admission of airand an upwardly-projecting nozzle C, covered at its upper end by a sieveC2.

A chimney-holder D, of any desired form, is provided with adownwardly-projecting nozzle E, which fits over the outside of thenozzle C' of the mixing-chamber, the glass chimney F being supported inthe chimneyholder in the usual manner and the chimneyholder being madeof skeleton form to admit of air passing therethrough into the outerportion of the chimney.

G indicates the tip of the burner, which is in the form of anannularchamber, provided with branch pipes H, connected toits underside, leading down to and forming a stem or central pipe I, which isadapted to be tted between the nozzle C of the mixing-chamber and thenozzle E, of the chimney-holder, as most clearly shown in the sectionalView in Fig. 2.

K indicates an outer mantle, and` L 'an inner mantle,both supported attheir upper ends from a central rod M, which passes downward through theinner mantle into a socket N, as clearly shown.

It will be noticed that both the mantles eX- tend below the series ofopenings G at the top of the burner-tip, so that when the mixed air andgas escaping through the apertures G in the top of the tip is lightedthe flame will be located between the two mantles and will heat both ofthem to incandescence, the perfect` combustion of the mixed air and gasbeing more thoroughlyassured by the airdrafts, which pass centrallythrough the tip and the inner mantle and outside of the outer mantle, asclearly shown.

From the foregoing description it will be seen that I have provided twomantles, both of which are subjected 4to the heat of the fiame, insteadof a single outer mantle, as heretofore used, and both of which will bebrought to a state of incandescence, thereby increasing the intensity ofthe light;

The central and outer draft arrangement will induce more perfectcombustion, thereby economizing in the use of gas, and may be regulatedby suitable dampers.

While I have illustrated and described the best means noW known to mefor carrying out my invention, I do not wish to be understood asrestricting myself to the eXact details of construction shown, but holdthat any slight changes or variations, such as might suggest themselvesto the ordinary mechanic, would properly fall Within the limit and scopeof my invention.

Having thus fully described my invention,

CHRISTIAN EDVV. LOTZ.

Vitnesses:

F. F. SOHAEFER, HERMAN Lo'rz.

